Modeling and numerical simulation of car frontal crash test using finite element method

IF 2 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Mechanical and Materials Engineering Pub Date : 2025-08-26 DOI:10.1186/s40712-025-00326-4

Driss Bendjaballah, Mohamed Sahli, Thierry Barrière

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Abstract

Nowadays, the development of safety systems for passenger protection in the automotive industry relies heavily on numerical simulations. FE simulation was widely used to study the sensitivity of design parameters and their influence on costs and/or overall weight in new car models through the inspection of different scenarios developed. In this article, crash simulations were conducted to simulate a car accident via the finite element method. The aim was to analyze the performance of a car structure deforming during the collision in the presence of dummy, belted or not, to determine the degree of safety provided to the occupants of the car. The CAD model of the car and the dummy was made using LS-DYNA software; the collision impulse of the vehicle and the speed of the driver's seat were observed and compared. Various incoming speeds were taken into account when the car was modeled to crash into a wall.

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汽车正面碰撞试验的有限元建模与数值模拟

如今，汽车工业中乘客保护安全系统的开发在很大程度上依赖于数值模拟。有限元模拟被广泛应用于研究设计参数的敏感性及其对新车型成本和/或总重量的影响。本文采用有限元法对一起汽车事故进行碰撞模拟。目的是分析在假人存在或不系安全带的情况下，汽车结构在碰撞过程中变形的性能，以确定为汽车乘员提供的安全程度。利用LS-DYNA软件建立了整车和假人的CAD模型；对车辆的碰撞脉冲和驾驶员座位的速度进行了观察和比较。在模拟汽车撞墙时，考虑了各种来袭速度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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